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Finding the Fourth Proportional to 528,659.59, 729,530.67 and 286,936.98

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Solution

The fourth proportional to 528,659.59, 729,530.67 and 286,936.98 is: 395,962.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,659.59 : 729,530.67 = 286,936.98 : x
  2. Step 2: Convert to fraction form
    528,659.59/729,530.67 = 286,936.98/x
  3. Step 3: Cross multiply
    528,659.59x = 729,530.67 × 286,936.98
  4. Step 4: Simplify right side
    528,659.59x = 209,329,327,267.18
  5. Step 5: Solve for x
    x = 209,329,327,267.18/528,659.59
  6. Step 6: Final answer
    x = 395,962.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.